:root {
  color-scheme: dark;
  --bg: #071427;
  --bg-2: #0b1b34;
  --panel: rgba(11, 27, 52, 0.78);
  --panel-strong: rgba(12, 38, 72, 0.92);
  --text: #f4f9ff;
  --muted: #b8c7da;
  --soft: #7f91aa;
  --signal-cyan: #8ee6ff;
  --signal-lime: #c8ff5e;
  --signal-coral: #ff6a4a;
  --signal-gold: #ffcf6b;
  --line: rgba(142, 230, 255, 0.22);
  --line-strong: rgba(142, 230, 255, 0.46);
  --shadow: 0 26px 70px rgba(0, 0, 0, 0.36);
  --radius: 8px;
  font-family: Inter, Manrope, "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  scroll-behavior: smooth;
}

body {
  min-height: 100%;
  margin: 0;
  color: var(--text);
  background:
    linear-gradient(rgba(7, 20, 39, 0.32), rgba(7, 20, 39, 0.88)),
    url("/assets/neuro-field.png") center top / cover no-repeat fixed,
    radial-gradient(circle at 18% 12%, rgba(142, 230, 255, 0.12), transparent 26rem),
    radial-gradient(circle at 82% 18%, rgba(200, 255, 94, 0.08), transparent 22rem),
    linear-gradient(135deg, var(--bg), #08172c 52%, #0b1b34);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  background:
    linear-gradient(rgba(142, 230, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(142, 230, 255, 0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.75), transparent 78%);
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  color: var(--signal-cyan);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--signal-cyan);
  outline-offset: 4px;
}

.site-shell {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(142, 230, 255, 0.15);
  background: rgba(7, 20, 39, 0.84);
  backdrop-filter: blur(18px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}

.brand {
  font-size: 1.02rem;
  font-weight: 800;
  letter-spacing: 0;
}

.brand span {
  color: var(--signal-cyan);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

.nav-toggle-lines,
.nav-toggle-lines::before,
.nav-toggle-lines::after {
  display: block;
  width: 18px;
  height: 2px;
  margin: 0 auto;
  background: currentColor;
  content: "";
}

.nav-toggle-lines::before {
  transform: translateY(-6px);
}

.nav-toggle-lines::after {
  transform: translateY(4px);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 0.94rem;
}

.language-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.language-switch a {
  padding: 6px 9px;
  border-radius: 5px;
}

.language-switch a[aria-current="page"] {
  color: var(--bg);
  background: var(--signal-cyan);
}

.hero {
  display: grid;
  align-items: start;
  min-height: 56vh;
  padding: clamp(92px, 12vh, 130px) 0 52px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--signal-cyan);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.hero-title {
  max-width: 920px;
  margin: 0;
  font-size: clamp(3.2rem, 10vw, 8.2rem);
  font-weight: 900;
  line-height: 0.96;
  letter-spacing: 0;
}

.hero-subtitle {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.34rem);
}

.hero-directions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.hero-directions li {
  border-top: 2px solid var(--accent, var(--signal-cyan));
  padding: 10px 18px 0 0;
  color: var(--text);
  font-weight: 700;
}

.section {
  padding: 58px 0;
}

.section-kicker {
  margin: 0 0 10px;
  color: var(--soft);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.section-title {
  max-width: 760px;
  margin: 0;
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1;
  letter-spacing: 0;
}

.entry-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.signal-panel {
  display: flex;
  flex-direction: column;
  min-height: 280px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.05), transparent 48%),
    var(--panel);
  box-shadow: var(--shadow);
  transition: border-color 180ms ease, transform 180ms ease;
}

.signal-panel:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
}

.signal-panel h3 {
  margin: 70px 0 16px;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  line-height: 1;
  letter-spacing: 0;
}

.signal-line {
  width: 100%;
  height: 2px;
  background: var(--accent, var(--signal-cyan));
}

.signal-panel p {
  margin: 0;
  color: var(--muted);
  line-height: 1.58;
}

.page-intro {
  max-width: 780px;
  padding: 108px 0 72px;
}

.page-intro h1 {
  margin: 0;
  font-size: clamp(2.8rem, 7vw, 6.6rem);
  line-height: 0.98;
  letter-spacing: 0;
}

.page-intro p {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 1.15rem;
  line-height: 1.7;
}

.placeholder-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  background: var(--panel-strong);
}

.placeholder-panel p {
  max-width: 680px;
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.site-footer {
  margin-top: 56px;
  border-top: 1px solid var(--line);
  padding: 34px 0 46px;
  color: var(--muted);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.contact-links a {
  border-bottom: 1px solid rgba(142, 230, 255, 0.35);
  padding-bottom: 3px;
}

@media (max-width: 900px) {
  .entry-grid {
    grid-template-columns: 1fr;
  }

  .signal-panel {
    min-height: 220px;
  }
}

@media (max-width: 760px) {
  .site-shell {
    width: min(100% - 28px, 1160px);
  }

  .nav {
    min-height: 64px;
  }

  .nav-toggle {
    display: inline-grid;
    place-items: center;
  }

  .nav-links {
    position: absolute;
    top: 64px;
    right: 14px;
    left: 14px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--bg);
    box-shadow: var(--shadow);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a {
    padding: 13px 10px;
  }

  .language-switch {
    margin-top: 8px;
  }

  .hero {
    min-height: auto;
    padding-top: 92px;
  }

  .hero-title {
    max-width: 100%;
    font-size: clamp(2.65rem, 13vw, 4rem);
  }
}